NCP5387MNR2G ON Semiconductor, NCP5387MNR2G Datasheet

IC CTLR BUCK 2/3/4PHASE 40-QFN

NCP5387MNR2G

Manufacturer Part Number
NCP5387MNR2G
Description
IC CTLR BUCK 2/3/4PHASE 40-QFN
Manufacturer
ON Semiconductor
Type
Multi Phase PWM Controllerr
Datasheet

Specifications of NCP5387MNR2G

Applications
Controller, Intel VR10, VR11, AMD CPU
Voltage - Input
4.75 ~ 5.25 V
Number Of Outputs
4
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
40-VFQFN Exposed Pad
Switching Frequency
100 KHz to 1000 KHz
Operating Supply Voltage
4.75 V to 5.25 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant

Available stocks

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Quantity
Price
Part Number:
NCP5387MNR2G
Manufacturer:
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Quantity:
4 450
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NCP5387
2/3/4 Phase Controller for
CPU Applications
which combines differential voltage and current sensing, and
adaptive voltage positioning to power both AMD and Intel
processors. Dual−edge pulse−width modulation (PWM) combined
with inductor current sensing reduces system cost by providing the
fastest initial response to transient load events. Dual−edge
multi−phase modulation reduces total bulk and ceramic output
capacitance required to satisfy transient load−line regulation.
allows easy compensation of the system. The proprietary method of
Dynamic Reference Injection (Patented) makes the error amplifier
compensation virtually independent of the system response to VID
changes, eliminating tradeoffs between overshoot and dynamic VID
performance.
Features
Applications
*For additional information on our Pb−Free strategy and soldering details, please
© Semiconductor Components Industries, LLC, 2007
April, 2007 − Rev. 3
download the ON Semiconductor Soldering and Mounting Techniques Reference
Manual, SOLDERRM/D.
The NCP5387 is a two−, three−, or four−phase buck controller
A high performance operational error amplifier is provided, which
Meets Intel’s VR 10.0 and 11.0 and AMD Specifications
Dual−Edge PWM for Fastest Initial Response to Transient Loading
High Performance Operational Error Amplifier
Supports both VR11 and Legacy Soft−Start Modes
Dynamic Reference Injection (Patented)
DAC Range from 0.5 V to 1.6 V
"0.5% System Voltage Accuracy from 1.0 V to 1.6 V
True Differential Remote Voltage Sensing Amplifier
Phase−to−Phase Current Balancing
“Lossless” Differential Inductor Current Sensing
Differential Current Sense Amplifiers for each Phase
Adaptive Voltage Positioning (AVP)
Frequency Range: 100 kHz – 1.0 MHz
OVP with Resettable, 8 Event Delayed Latch
Threshold Sensitive Enable Pin for VTT Sensing
Power Good Output with Internal Delays
Programmable Soft−Start Time
This is a Pb−Free Device*
Desktop Processors
1
*Temperature Range: 0°C to 85°C
†For information on tape and reel specifications,
NCP5387MNR2G*
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
*Pin 41 is the thermal pad on the bottom of the device.
40 PIN QFN, 6x6
Device
CASE 488AR
MN SUFFIX
NCP5387 = Specific Device Code
AA
WL
YY
WW
G/G
ORDERING INFORMATION
1
40
http://onsemi.com
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(Pb−Free)
Package
QFN−40
Publication Order Number:
1
2500 / Tape & Reel
AAWLYYWW
MARKING
DIAGRAM
NCP5387
Shipping
NCP5387/D
G

Related parts for NCP5387MNR2G

NCP5387MNR2G Summary of contents

Page 1

... G/G = Pb−Free Package *Pin 41 is the thermal pad on the bottom of the device. ORDERING INFORMATION Device Package NCP5387MNR2G* QFN−40 (Pb−Free) *Temperature Range: 0°C to 85°C †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D ...

Page 2

NCP5387 PIN CONNECTIONS VID0 3 VID1 4 VID2 5 VID3 NCP5387 6 VID4 7 VID5 8 VID6 9 VID7 10 DACMODE (Top View) http://onsemi.com DRVON 28 CS4 27 CS4N 26 CS3 25 CS3N ...

Page 3

V VTT 680 W PULLUPS RVCC 36 2 VID0 VID0 3 VID1 VID1 4 VID2 VID2 5 VID3 VID3 6 VID4 VID4 7 VID5 VID5 8 VID6 VID6 9 VID7 VID7 10 VR10/11 VID_SEL 1 EN VR_EN 37 VR_RDY ...

Page 4

VTT 680 W PULLUPS RVCC 36 2 VID0 VID0 3 VID1 VID1 4 VID2 VID2 5 VID3 VID3 6 VID4 VID4 7 VID5 VID5 8 VID6 VID6 9 VID7 VID7 10 VID_SEL VR10/11 1 VR_EN EN 37 VR_RDY VR_RDY 40 ...

Page 5

V VTT 680 W PULLUPS RVCC 36 2 VID0 VID0 3 VID1 VID1 4 VID2 VID2 5 VID3 VID3 6 VID4 VID4 7 VID5 VID5 8 VID6 VID6 9 VID7 VID7 10 VID_SEL VR10/ VR_EN 37 VR_RDY ...

Page 6

DACMODE VID0 VID1 VID2 VID3 VR10/11/AMD VID4 DAC VID5 VID6 VID7 SS DAC − VS− + VS+ Diff Amp DIFFOUT 1 VFB − Error Amp COMP Droop Amplifier VDRP + − 1 CS1 − CS1N Gain ...

Page 7

PIN DESCRIPTIONS Pin No. Symbol 1 EN Pull this pin high to enable controller. Pull this pin low to disable controller. Either an open−collector output (with a pull−up resistor logic gate (CMOS or totem−pole output) may be used ...

Page 8

MAXIMUM RATINGS Electrical Information Pin Symbol COMP VDRP VS+ VS− DIFFOUT VR_RDY, VR_HOT, VR_FAN VCC ROSC DACMODE REF All Other Pins *All signals reference to GND unless otherwise noted. Thermal Information Thermal Characteristic, QFN Package (Note 1) Operating ...

Page 9

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter Error Amplifier Input Bias Current Input Offset Voltage (Note 3) Open Loop DC Gain (Note 3) Open Loop Unity Gain Bandwidth (Note 3) Open ...

Page 10

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter Internal Offset Voltage VDRP pin offset voltage AND Error Amp input voltage VDRP Adaptive Voltage−Positioning Amplifier Current Sense Input to VDRP Gain Current Sense ...

Page 11

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter Modulators (PWM Comparators) Minimum Pulse Width (Note 3) Propagation Delay (Note 3) Magnitude of the PWM Ramp 0% Duty Cycle 100% Duty Cycle PWM ...

Page 12

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter Soft−Start Soft−Start Pin Source Current Soft−Start Ramp Time Soft−Start Pin Discharge Voltage VR11 Dwell Time at V BOOT DACMODE Input Input Range for AMD ...

Page 13

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter Voltage Reference (V ) REF V Output Voltage REF Input Supply Current V Operating Current CC Temperature Sensing VR_FAN Upper Voltage Threshold VR_FAN Lower ...

Page 14

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter VRM11 DAC System Voltage Accuracy 1.0 V < DAC < 1.6 V 0.8 V < DAC < 1.0 V 0.5 V < DAC < ...

Page 15

Table 1: VRM11 VID Codes VID7 VID6 VID5 800 mV 400 mV 200 mV 100 ...

Page 16

Table 1: VRM11 VID Codes VID7 VID6 VID5 800 mV 400 mV 200 mV 100 ...

Page 17

Table 1: VRM11 VID Codes VID7 VID6 VID5 800 mV 400 mV 200 mV 100 ...

Page 18

Table 1: VRM11 VID Codes VID7 VID6 VID5 800 mV 400 mV 200 mV 100 NCP5387 VID4 VID3 VID2 VID1 50 ...

Page 19

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter VRM10 DAC System Voltage Accuracy 1.0 V < DAC < 1.6 V 0.83125 V < DAC < 1 Load Offset Voltage from ...

Page 20

Table 2: VRM10 VID Codes VID4 VID3 VID2 400 mV 200 mV 100 ...

Page 21

Table 2: VRM10 VID Codes VID4 VID3 VID2 400 mV 200 mV 100 ...

Page 22

ELECTRICAL CHARACTERISTICS (Unless otherwise stated: 0°C < T < 85°C; 4.75 V < Parameter AMD DAC System Voltage Accuracy 1.0 V < DAC < 1.55 V 0.8 V < DAC < 1 Load Offset Voltage from ...

Page 23

T, TEMPERATURE (°C) Figure 5. Voltage Reference (VREF) vs. Temperature 2.017 2.016 2.015 2.014 2.013 2.012 TEMPERATURE (°C) Figure 7. ROSC Voltage ...

Page 24

Start 4.25 4.20 4.15 4.10 Stop 4. TEMPERATURE (°C) Figure 11. UVLO Threshold vs. Temperature 0.90 0.88 Start 0.86 0.84 0.82 0.80 0.78 0.76 Stop 0.74 0. ...

Page 25

CS2 5.790 CS3 5.785 5.780 CS4 CS1 5.775 5.770 5.765 TEMPERATURE (°C) Figure 17. VDRP Gain vs. Temperature 0.3 0.2 0.1 0.0 4ph 50k −0.1 4ph 25k −0.2 −0 ...

Page 26

T, TEMPERATURE (°C) Figure 23. Phase Detect Time vs. Temperature NCP5387 TYPICAL CHARACTERISTICS 235 234 233 232 231 230 229 Figure 24. ...

Page 27

FUNCTIONAL DESCRIPTION General The NCP5387 dual edge modulated multiphase PWM controller is specifically designed with the necessary features for a high current VR10, VR11 or AMD CPU power system. The IC consists of the following blocks: Precision Programmable DAC, Differential ...

Page 28

PWM Comparators with Hysteresis Four PWM comparators receive the error amplifier output signal at their noninverting input. Each comparator receives one of the triangle waves offset by 1 it’s inverting input. The output of the comparator generates the ...

Page 29

NCP5387 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 Figure 26. Typical AMD Soft−Start Sequence to Vcore = 1.3 V 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 ...

Page 30

The NCP5387 is a high performance multiphase controller optimized to meet the Intel VR11 Specifications. The demo board for the NCP5387 is available by request configured as a four phase solution with decoupling designed to provide a 1.0 ...

Page 31

Dynamic VID Testing The VTT tool provides for VID stepping based on the Intel Requirements. Select the Dynamic VID option. Before enabling the test set the lowest VID to 0 greater and set the highest VID to a ...

Page 32

Programming the Current Limit and the Oscillator Frequency The demo board is set for an operating frequency of approximately 330 kHz. The ROSC pin provides a 2.0 V reference voltage which is divided down with a resistor divider and fed ...

Page 33

Inductor Current Sense Compensation The NCP5387 uses the inductor current sensing method. This method uses an RC filter to cancel out the inductance of the inductor and recover the voltage that is the result of Rsense(T) + Figure 36. The ...

Page 34

A complex switching model is available by request which includes a more detailed board parasitic for this demo board. Compensation and Output Filter Design The values shown on the demo board are a good place to start for any similar ...

Page 35

... Figure 39. Uncompensated and Compensated Output Impedance vs. Temperature ON Semiconductor provides an excel spreadsheet to help with the selection of the NTC. The actual selection of the NTC will be effected by the location of the output inductor with respect to the NTC and airflow, and should be verified with an actual system thermal solution ...

Page 36

... DAC voltage even during a dynamic change in the VID setting during operation. Gate Driver and MOSFET Selection ON Semiconductor provides the NCP3418B as a companion gate driver IC. The NCP3418B driver is optimized to work with a range of MOSFETs commonly used in CPU applications. The NCP3418B provides special functionality and is required for the high performance dynamic VID operation of the part ...

Page 37

... Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81− ...

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